Propeller.



A. M. 'DQTES.

I PROPELLER.

APPLICATION FILED 11,112.17, 1913.

1,10G,9%%@ Q Patented June 23,1914,

775572 5565, 1521/4972 5072 f AdeZWze Jfflafej ZZWZ/M. W Y y depressor} as UNITED. STATES ATE anion.

ADELMEB M. BATES. 0F CHICAGO. ILLINOIS. ASSIGNCR T0 BATES VALVE BAG COMPANY, OF CHICAG-O, ILLINOIS, A CORPORATION OF WEST VIRGINIA;

PnoPnLLnn.

v Patented J une 23,1914. Serial n 754.757.

Specification of Letters Patent.

l Application filed March 17, 1913.

Too]? whom it moy con cern Be it known that I, Annmrsn M. Barns, a l vcitizen of the United States, residing at '(hicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Propellers, of which the follt'nving is a specification.

My invention relates to improvements in propellers and propelling vanes such as are particular];' adapted to propeller feeding of granular material although'of course adapt-ed to other'uses wherever centrifugal propelling is desirable.

It is illustrated diagrammatic-ally in one form in the accompanying drawings, wherein- I l Figure 1 shows an end elevation with the pointof connection with the sleeves in a truncated triangular form as indicated so that that part of the vanes where the'lineal velocity is greatest will be smallest in crosssecti nal area. place the flanges A A are l more closely together than-lt This is for the head of the bolt 2 to hold it against r0tation thus facilitating an assembly. The operation of the device is of course self-evident. When the shaft is rotated the propeller will tend to discharge centrifugall v any material coming in Contact with it and preferably will be in any suitable form of jacket or propelling machineor housing which it is not here necessary to show. All that will be necessary will be to provide means for the material to approach the mill together with a passage by which the propeller may clischarge it awayfrom itself.

It will be evident that while my device is operative, still many changes might he made in size, shape and arrangement of parts and I ings be regarded as in a sense diagrammatic in order that 1' he not limited in the senile of my invention to the of parts therein shown.

I claim: A propeller comprising a sharia engag sleeve, bosses from, fianga projeeting ontw other points.

shaft in section; Fig. 2 shows a side elevation with one blade removed; Fig. 3 a plan view of one of the blades.

Like parts are indicated by like letters throughout the several figures.

The shaft A which of course isicircular in ti-ross-section.- has bolted thereon the two semi-cylindrical sleeve members A held togcther and to the shaft by the bolt A and it will be noted thatv each of these sleeve members carries adjacent eitherv end the flanges or walls A 1 the outer edges of" svhich arranged in planes arallel to the tangent to the shaft and at right angles each to the other so as to form a square about the shaft. In the center of each of these. is located the bosses A A. apertured and screw-threaded as at A.

The vanes or blades B rest upon these flanges A A being held in positionthereon by the sap-screws B engaging the elon gated openings B= therein, these enlnngated openings being provided for the par he of: per-mitt greater ease of adjustment. The 1 vanes or lades B are inwardly grooved or at B to give stiffness and also i to assisbin guiding the vanes in position when they are to be assembled and, also to give a certain amount of packing. efi'ect in the vanes to facilitate the feeding pmoesa; The vanes are outwardly tapered from their V heing forate and a vnap screw it! said bosses and-passing 'U- n muons in said vanw to halal position. g g y In testimony nhereot"; I afi'rs my amre in the pzesence of two witnemesthis Mich day of March 131?;

hi. BAEES.

saidflanges said propeller vanes thevanw'ein ttEtnesses:

Bnssm S. Elton, Lmnnn M. Bananas;

It will be notegl thatat oneapproached purpose of engaging the wish therefore that my drawsaid bosses, propeller, vanes mounted uponprecise arrangement I I so projecting ontwardlv .there- 

